UKâ€™s mobile phone giant Orange is demonstrating a prototype cellphone charger that relies on wind power. The portable charger is designed for those long outdoor camping trips where thereâ€™s no electric outlet available.
It weighs only about 5 ounces (150g) and small enough to carry around. You can let stand alone, or tie it up on a tree, but more conveniently, you can install it on top of your tent to catch the wind.
The wind charger will be on display at this yearâ€™s Glastonbury festival from June 22-24.
Of course you canâ€™t buy one yet, itâ€™s still a prototype. But with some DIY determination, it should not be very difficult to make one: a fan blade, a dynamo, some programmable microcontroller chips to regulate the voltage, it can be done.
Or wait when Orange ships it to a store near you.